十进制转换为十六进制

迷南。 2022-09-26 02:58 208阅读 0赞

package Chapter05;
    
    import java.util.*;
    //import java.util.Scanner;
    
    import javax.swing.JOptionPane;
    
    public class chapter05_example01 {
    
        public static void main(String[] args) {
    
            // 测试
            int tt = 9, yy = 11;
            test01(tt);
            test01(yy);
            // 十进制转换为十六进制
            Scanner input = new Scanner(System.in);
            System.out.println("Please input a number:");
            int decimal = input.nextInt();
            System.out.println(decimalToHex(decimal));
            input.close();
    
            String input2 = JOptionPane.showInputDialog(null, "输入Decimal data", "标题", JOptionPane.QUESTION_MESSAGE);
            int decimal2 = Integer.parseInt(input2);
            String jieguo2 = "decimal  " + decimal2 + "\nHex  " + decimalToHex(decimal2);
            JOptionPane.showMessageDialog(null, jieguo2, "结果", JOptionPane.INFORMATION_MESSAGE);
        }
    
        public static void test01(int xx) {
            if (xx > 10)
                return;
            else
                System.out.println("小于10");
        }
    
        public static String decimalToHex(int decimal) {
            // 将一个十进制数转换为十六进制数
            String hex = "";
            while (decimal != 0) {
                int hexvalue = decimal % 16;
                hex = toHexChar(hexvalue) + hex;
                decimal = decimal / 16;
            }
            return hex;
        }
    
        public static char toHexChar(int HexValue) {
            if (HexValue <= 9 && HexValue >= 0)
                return (char) (HexValue + '0');
            else
                return (char) (HexValue - 10 + 'A');
        }
    }